Puncture-closer for pneumatic tires.



R. w. SAMPSON. PUNCTURE CLOSER FOR PNEUMATIC TIRES.

APPLICATION FILED FEB. 8, I912- 1 140,7 1 8. Patented May 25, 1915.

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ROBERT WILLIAM SAMPSON, 0F WESTMOUNT, QUEBEC, CANADA.

PUNCTURE-CLOSER FOR PNEUMATIC TIRES.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed February 8, 1912. Serial No. 676,200.

To all whom it may concern:

Be it known that I, ROBERT WILLIAM SAMPsoN, a subject of the King of Great Britain, residing at Westmount, in the Province of Quebec and Dominion 'of Canada, have invented certain new and useful Improvements in Puncture-Closers for Pneumatic Tires, of which the following is a specification.

My invention relates to puncture closers of the clamping type; and it consists inthe particulars hereinafter set forth.

In the drawings, Figure 1 is a side elevation, and Fig. 2 is a top view of my improved closer; Fig. 3 is a cross sectional View of the closer clamped in place, and with the shank cut or broken off; Fig. 4 is a top view of the same; Fig. 5 is a side view, partly in section, of a modification; Fig. 6 is a cross-sectional view of the modification showing the closer clamped in place, and with its shank cut off; and Fig. is a top view of the same.

The same parts are designated by corresponding numerals in all the figures.

The clamping parts of the closer may be of any of the well known forms, which embody a head and rotatable shank and a 00- operating cap, as 1, 2 and 3 respectively; and it may have, if desired, a washer 4, beneath its cap. To the cap I attach a cover 5, of flexible, yielding or elastic material, which may either be unperforated and fastened to one side of the cap, as shown in Figs. 1 to 4, or perforated, to allow the passage of the shank therethrough, as shown in Figs. 5, 6 and 7, and attached to substantially the whole surface of the cap, and which is provided with a groove or channel 7, therethrough, so positioned that its bottom angle shall be intersected by the shank. Both of these constructions make it possible to reach the shank, with a file, close to the top of the metal cap, and to file or cut off the shank without injuring the cover 5. When this Copies of this patent may be obtained for is done, the imperforate cover will fall down over and completely cover the upper face of the cap, preventing the metal of the cap, and particularly any projecting part of the shank which may protrude above the metal cap, from coming in contact with anything against which the top of the closer is pressed. And in the case of the perforate cover, it will act as a Washer or cushion to prevent any contacting surface from meeting the end of the shank or the metal cap. This is particularly important when the closer is used to effect repairs in inner tubes. For when a repaired inner tube is inflated it is expanded with much force against the inside of the shoe, and, in use on the road, a certain amount of slipping inevitably takes place between the outside of the inner tube and the shoe. Under these circumstances, if any angular or rough metallic surfaces are presented by the head of the closer against the inner skin of the shoe, they are liable not only to cut and tear that skin, but also to hold or cling thereto so as to tend to tear the closer out of the inner tube, straining at and endangering the repair. But by the use of my improved cover this danger is obviated, as a yielding or cushion like surface is presented against the inner skin of the shoe.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, is:

l. The combination, in a pneumatic tire plug embodying a head, a cap and a clamping shank, of a flexible cover attached to one side of the outer face of the cap.

2. The combination in a pneumatic tire plug embodying a head, a shank disseverable above the cap, and a cooperative cap provided with a fender covering over its shank receiving perforation.

ROBERT WILLIAM SAMPSON.

Signed in the presence of P. B. Plum, 0. H. PETERS.

five cents each, by addressing the Commissioner of Patent,

Washington, .D. G. 

